Development of a new set-up for Cold Electron Collision experiment utilizing the threshold photoelectrons

A new type of the experimental set-up for the measurements of the total cross section for collisions between electrons and atoms or molecules at very low collision energies, which are called as Cold Electron Collisions. The key of this set-up is to use the threshold photoelectrons as a source for low-energy electron beam combined with the penetration field method. Total cross sections measurements over the energy range from thermal energy to 12eV with high-energy resolution by this new set-up are presented.